Monitor Description
WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
The MG ECU monitors the current to the rear motor. If the current passes to the rear motor while the vehicle stops with the ignition switch in the ON position or the shift lever in the N position, the MG ECU will detect an abnormality. The HV control ECU illuminates the MIL and sets a DTC.